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  • $4 Cheesy Burgers when you use your PATTY PERKS app to earn loyalty To redeem this offer be sure your Patty Perks App order includes a cheesy burger and it will be $4. Offer Valid Only in The Patty Perks App. Valid Thursday, August 21st, 2025 only.
  • August Free Fridays Features a Free Cookie With Any Burger Purchase Made In-Store. (1) Free Cookie with Burger Purchase for each Transaction. Offer Valid Only On Friday, August 1, 8, 15, 22, + 29, 2025. Offer Only Available at Participating Locations.
  • black pepper seasoned angus beef patty, Swiss, applewood smoked bacon, sour cream horseradish, arugula, tomato, toasted brioche bun
  • creamy vanilla ice cream, nellie and joe's® key lime juice, graham cracker crumbles, fluffy whipped cream, lime wheel
  • rich peanut butter flavor combines with soft chewy centers + crispy edges to give these cookies the perfect balance of salty + sweet. For a limited time only.
  • 100 Bonus Points on your entire purchase made with your patty perks loyalty account on the 21st of Every Month!
  • Every Wednesday get a cheesy and fries combo meal special!
  • Order online or in the B21 app for Burger 21 delivery!
  • Download the patty Perks app To Earn Rewards
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